Most women who ask about a breast lift already know something has changed: the shape is different, the position is lower, bras fit differently than they used to. What they don't have is a framework for understanding whether they're looking at minor laxity, moderate descent, or something that calls for a more involved correction. Surgeons evaluate breast ptosis using a standardized grading scale, and the grade determined at consultation shapes whether a lift is appropriate and which technique will deliver the right result.
Dr. Robert Cohen, a board-certified plastic surgeon at his Beverly Hills practice, has spent more than twenty years evaluating breasts of virtually every anatomy. As a fellow of the American College of Surgeons and a published author of textbook chapters on augmentation mastopexy, he uses that knowledge to give patients a clear, anatomy-specific picture of what their options actually look like. Read on for a breakdown of the standard ptosis grades and what each typically means for treatment.
What Causes Breast Ptosis?
Sagging develops when the breast's natural support structures lose their elasticity. The American Society of Plastic Surgeons identifies aging, gravity, pregnancy, breastfeeding, weight fluctuation, and genetics as the main contributors. Volume loss is often the trigger: as tissue deflates, the skin envelope stretches and falls, pulling the nipple and areola downward with it.
Smaller breasts are not immune. Structural changes may be subtler, but ptosis develops regardless of size.
The Regnault Classification: How Ptosis Is Graded
The most widely used framework for evaluating breast ptosis is the Regnault classification. The key reference point is the inframammary fold (IMF), the crease where the breast meets the chest wall. Nipple position relative to that fold determines the grade. Here is how the system breaks down:
- Grade I (Mild): The nipple sits at the level of the inframammary fold. Some skin laxity and visible descent are present, but the nipple has not dropped below the fold.
- Grade II (Moderate): The nipple falls 1 to 3 centimeters below the inframammary fold. Breast tissue has begun to project below the nipple, and the overall shape has visibly changed.
- Grade III (Severe): The nipple sits more than 3 centimeters below the fold, at or below the lowest point of the breast mound. The breast has lost significant projection and forward contour.
- Pseudoptosis: The nipple remains at or above the fold, but breast tissue itself descends below it, creating visible fullness in the lower pole. This presentation is common after significant weight loss or deflation following breastfeeding.
Which Grades Require a Breast Lift?
Grade II and Grade III ptosis generally require a formal mastopexy to reposition the nipple-areola complex and reshape the breast mound. The degree of sagging determines the incision approach needed.
Mild ptosis is more variable. A circumareolar (peri-areolar) lift can address it with minimal scarring, and in some women, adding volume through an implant or fat grafting may provide adequate repositioning on its own. Pseudoptosis requires a different assessment: even though the nipple sits at an acceptable height, the lower pole fullness often warrants surgical correction. Dr. Cohen evaluates each presentation individually, accounting for skin elasticity, breast volume, and the patient's goals rather than defaulting to a fixed protocol.
Expert Breast Lift Surgery in Beverly Hills
Dr. Cohen is regularly invited to present and teach advanced breast techniques to fellow plastic surgeons, and his private practice has included cases ranging from subtle Grade I corrections to complex revision mastopexy. His boutique Beverly Hills practice is built on the conviction that no two patients, and no two surgical plans, should look the same.
Schedule a consultation with Dr. Cohen to find out which grade applies to you and what that means for your surgical options.